最近项目中Oracle库中一个表log_gpackage有数据丢失现象,但因为没有启用归档,所以CDC和Dataguard都无法使用。google一下,最简单的方法,增加触发器处理逻辑:
---创建触发器
--创建记录表,该表分别记录了,删除的用户、机器名、ip及删除时间等
create table log_gpackage_history_1120 as
(select sid,username,program,machine,'000.000.000.000' ipaddress,sysdate moditime from v$session where 0=1);
--创建目标表的触发器,只记录删除操作
create or replace trigger log_gpackage_history_tr
before delete on dbusrdms.log_gpackage
for each row
begin
insert into log_gpackage_history_1120 select sid,username,program,machine,sys_context('userenv','ip_address'),sysdate from v$session
where audsid = userenv('sessionid');
end;
--测试数据
SELECT * FROM log_gpackage;
delete from log_gpackage where LOGSEQNO='172886';
--检查测试结果
SELECT * FROM log_gpackage_history_1120
SID USERNAME PROGRAM MACHINE IPADDRESS MODITIME
1 484 DBUSRDMS plsqldev.exe WORKGROUP\AP5 192.168.127.8 2018-11-20 23:00:18
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